1 #include <sparc-ifunc.h>
2 
3 #define __sha256_process_block __sha256_process_block_generic
4 extern void __sha256_process_block_generic (const void *buffer, size_t len,
5 					    struct sha256_ctx *ctx);
6 
7 #include <crypt/sha256-block.c>
8 
9 #undef __sha256_process_block
10 
11 extern void __sha256_process_block_crop (const void *buffer, size_t len,
12 					 struct sha256_ctx *ctx);
13 
cpu_supports_sha256(int hwcap)14 static bool cpu_supports_sha256(int hwcap)
15 {
16   unsigned long cfr;
17 
18   if (!(hwcap & HWCAP_SPARC_CRYPTO))
19     return false;
20 
21   __asm__ ("rd %%asr26, %0" : "=r" (cfr));
22   if (cfr & (1 << 6))
23     return true;
24 
25   return false;
26 }
27 
28 extern void __sha256_process_block (const void *buffer, size_t len,
29 				    struct sha256_ctx *ctx);
30 sparc_libc_ifunc (__sha256_process_block,
31 		  cpu_supports_sha256(hwcap) ? __sha256_process_block_crop
32 		    : __sha256_process_block_generic);
33